August weather forecast
Iowa, USA

August in Iowa serves as a gentle reminder that summer's reign is nearing its end, though the heat persists. Daytime temperatures typically hover between 80°F (26.7°C) and 90°F (32.2°C). The nights, while warm, bring a subtle hint of the approaching autumn, with temperatures ranging from 60°F (15.6°C) to 70°F (21.1°C).

Rainfall in August, though less frequent than the earlier summer months, can still manifest in the form of sporadic thunderstorms. These storms, stemming from lingering heat and humidity, offer respite by tempering the warmth with their cooling showers. The rain, besides providing relief, also plays a crucial role in sustaining Iowa's vast agricultural landscapes during this warm period.

In comparison to July, August sees a gradual decrease in both temperature and humidity levels, especially as the month progresses. The sun, while still dominant, loses some of its intensity, casting a milder, golden hue over the state. This shift is indicative of the transition from the high-energy summer months to the mellower autumn season.

Areas close to significant water sources, like Burlington along the Mississippi River, may experience slightly more moderated temperatures, thanks to the water's tempering influence. Nonetheless throughout Iowa, August stands as a bridge between the full-blown summer and the impending fall. The month gracefully balances the residual warmth of July with subtle hints of the cooler days ahead, making it an exquisite time for outdoor activities and end-of-summer celebrations.

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• Des Moines - August »
  In August, Des Moines's weather conditions record an average high-temperature of a still moderately hot 81.7°F (27.6°C), demonstrating little divergence from the preceding month. In August, Des Moines experiences a continuation of the summer with a slight downtrend in temperature and shorter daylight hours.
• Cedar Rapids - August »
  In Cedar Rapids, during August, the rain falls for 11.9 days and regularly aggregates up to 1.22" (31mm) of precipitation. On the first day of August in Cedar Rapids, sunrise is at 6:00 am and sunset at 8:25 pm.
• Davenport - August »
  In Davenport, during August, the rain falls for 13.3 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Davenport, during August, the rain falls for 13.3 days and regularly aggregates up to 1.89" (48mm) of precipitation.
• Sioux City - August »
  In Sioux City, in August, it is raining for 11.7 days, with typically 1.5" (38mm) of accumulated precipitation. In August, in Sioux City the rain falls for 11.7 days.
• Iowa City - August »
  In Iowa City, in August, it is raining for 12.8 days, with typically 1.93" (49mm) of accumulated precipitation. On the first day of August in Iowa City, sunrise is at 6:00 am and sunset at 8:24 pm.
• Waterloo - August »
  On the first day of August in Waterloo, Iowa, sunrise is at 6:01 am and sunset at 8:29 pm. In Waterloo, in August, it is raining for 13.3 days, with typically 1.97" (50mm) of accumulated precipitation.
• Ames - August »
  In Ames in August, during 14.3 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Ames, in August, it is raining for 14.3 days, with typically 2.68" (68mm) of accumulated precipitation.
• West Des Moines - August »
  In West Des Moines in August, it is raining for 12.3 days, with typically 2.36" (60mm) of accumulated precipitation. August temperatures in West Des Moines, Iowa, vary between a high-temperature of 81.7°F (27.6°C) and a low-temperature of 62.4°F (16.9°C).
• Council Bluffs - August »
  In Council Bluffs, Iowa, during August, the rain falls for 13.5 days and regularly aggregates up to 2.64" (67mm) of precipitation. June through August, with an average maximum UV index of 6, are months with the highest UV index in Council Bluffs, Iowa.
• Dubuque - August »
  July and August, with an average of 9.7h of sunshine, are months with the most sunshine in Dubuque, Iowa. In Dubuque, Iowa, in August, it is raining for 12.1 days, with typically 1.73" (44mm) of accumulated precipitation.
• Ankeny - August »
  In Ankeny, during August, the rain falls for 13.1 days and regularly aggregates up to 2.48" (63mm) of precipitation. August carries the summer charm forward even with a slight drop in temperatures compared to July in Ankeny, Iowa.
• Urbandale - August »
  In Urbandale in August, it is raining for 12.3 days, with typically 1.81" (46mm) of accumulated precipitation. On the first day of August in Urbandale, sunrise is at 6:09 am and sunset at 8:33 pm.